Why did the revolutionary events of 1848-1849 in a number of regions of Germany not turn into a struggle for its unification

Why did the revolutionary events of 1848-1849 in a number of regions of Germany not turn into a struggle for its unification, as it happened in the same years in Italy?

In 1848-1849, revolutions took place in Europe. Most of them ended in defeat. For example, revolutionary actions in Germany, Italy, the Austrian Empire, the state power suppressed the opposition. But the rebels still managed to achieve certain results. Bourgeois reforms were carried out in the states, which contributed to the development of capitalist relations. Italy and Germany failed to achieve unification, but the first prerequisites for this appeared. The workers also achieved their demands.